2017 hyundai elantra check engine light on car sputters

My 2018 has been doing the same thing! Any help?

I had my car repaired today the diagnostic was saying one of my cylinders was misfiring so they flushed the line changed the sparkplugs and it's running fine

My 2017 was rough at idle and the engine light came on. The dealership replaced the coil under warranty and the car seems to be running fine now.

I have 2018 elantra and driving uber, it has over 84k km on it, I have the same problem today. I drive to hyundai service Richmond hill, Toronto and they told me this cars has callback because of this issue, servicing free of charge,

2017 elantra, same problem but I had lost of power at times as well. Misfire on 2 cylinders, changed all ignition coils (when one goes the others usually aren't far behind) and spark plugs. Cleared up rough idle and power loss. Had to un hook the battery for 15 mins to clear check engine light

I had the same on my 2017 Elantra Limited. The spark plugs were changed and it ran fine for 2 days then the random sputtering, vibrations, and check engine light came on for a minute or two before going back to normal. Luckily I was near an auto store and they connected an OBD2 Scanner to my car. It showed the Upper O2 Sensor was bad. I bought the part and doing it myself as the dealer wanted 2 to 3 times more $ for the part and that didn't include the cost of labor.